<!DOCTYPE html>
<!--
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<html>
    <head>
        <meta charset="UTF-8">
        <title></title>
    </head>
    <body>
        <?php
       $s=0;
       for($i=1;$i<=100;$i++)
       {
           if($i%2!=0) 
              continue;
          $s=$s+$i;
       }
       echo"$s";
        ?>
    </body>
</html>
